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Finding the Fourth Proportional to 253,735.32, 380,609.14 and 85,258.06

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Solution

The fourth proportional to 253,735.32, 380,609.14 and 85,258.06 is: 127,889.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,735.32 : 380,609.14 = 85,258.06 : x
  2. Step 2: Convert to fraction form
    253,735.32/380,609.14 = 85,258.06/x
  3. Step 3: Cross multiply
    253,735.32x = 380,609.14 × 85,258.06
  4. Step 4: Simplify right side
    253,735.32x = 32,449,996,894.67
  5. Step 5: Solve for x
    x = 32,449,996,894.67/253,735.32
  6. Step 6: Final answer
    x = 127,889.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.